Trump visits battleground states as he adjusts to Harris as new rival

Republican presidential nominee former President Donald Trump speaks at a campaign event at Precision Components Group (Matt Slocum/AP)

As Democrats kick off their convention in Chicago, Donald Trump is trying to regain his footing after weeks of struggling to adjust to Vice President Kamala Harris as his rival.

The former US president and GOP nominee delivered a speech at a factory in Pennsylvania on Monday as he attempts to undercut the Democratic celebration with a jam-packed schedule.